Image processing apparatus, image processing method, and storage medium

Abstract

An image processing apparatus includes a control amount calculating unit configured to calculate an equivalent electric power value using a pixel value of an input video signal, the equivalent electric power value corresponding to an amount of energy involved when an image based on the video signal is displayed on a display unit, and to calculate a control amount for controlling display luminance of the display unit so that the equivalent electric power value becomes equal to a predetermined value, and a correction processing unit configured to control the display luminance using the control amount calculated by the control amount calculating unit.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an image processing apparatus, an image processing method, and a storage medium. More specifically, the present invention relates to an image processing apparatus, an image processing method, and a storage medium for use in, for example, a television broadcaster to check an image to be displayed at a receiver.[0003]2. Description of the Related Art[0004]For instance, television broadcasters or video content distributors perform quality checks or the like before broadcasting or distributing programs (content). The quality checks are generally performed by displaying images of the programs on display devices (monitors).[0005]For example, Japanese Unexamined Patent Application Publication No. 2001-136548, the disclosure of which is incorporated herein by reference, describes a technique in which a display device capable of switchably displaying an original image and a processed image produc...

AI Technical Summary

Benefits of technology

The patent text discusses the issue of different display devices having different characteristics, such as peak luminance and energy consumption. To check the quality of images displayed on these devices, it is time-consuming to prepare display devices for display checks using individual types of display devices. The patent proposes a technique for controlling display luminance using a single display device by calculating the average picture level of the input video signal and adjusting the brightness of the display accordingly. However, this technique does not accurately reproduce the luminance characteristic of a display device, such as a PDP, which limits the energy consumed for display. The patent proposes a solution to this problem by using the luminance signal as a feature value to calculate the amount of energy involved in displaying an image on a display device.

Problems solved by technology

Therefore, in order to suppress the generation of heat from display devices, extend product lifetime, or reduce electric power consumption, the signal level of an input video signal having a predetermined signal level (pixel value) or higher is limited and is output to the display devices.

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